TECHNICAL SERIES No. 2. g 
U.S. DEPARTMENT OF AGRICULTURE. 
DIVISION — 
THE 
CRASS AND GRAIN JOINT-WORM FLIES 
THEIR ALLIES: 
A CONSIDERATION OF SOME NORTH AMERICAN 
PHYTOPHAGIC EURYTOMIN. 
BY 
tO) HOWARD, 
ENTOMOLOGIST. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1896. 
